DTC 系统中随机定子电流信号的功率谱估计

SPECTRA ESTIMATION OF THE RANDOM STATOR CURRENT SIGNAL IN THE DIRECT TORQUE CONTROL SYSTEM

针对ＤＴＣ理论中Ｄｅａｄ－Ｂｅａｔ控制法的缺陷，推出了在新的控制方式——磁链实时控制下逆变器开关状态的选择规律，并对影响系统性能的关键环节——定子电流信号的功率谱分布作了较详细的讨论，得出了相应的结论。

Focused on the defaults of 'Dead Beat' control methodin the Direct Torque Control theory, this article presents a new control strategy-the flux real time control method, and then sets up the selection principles of the inverter switching state. Moreover, to the stator current signal and its spectra, a key sector that influences the system performance, this article gives a detailed discussion and gets a conclusion.